Growth exterminator



July 2, 1940. A. M. SCHROEDER anowm sx'rmmuoa Filed l-11 1i, 1938 .17.Mfichroeder INVENTOR ATTORNEYS Patented July 2, 1940 UNITED STATESPATIENT} OFFICE a GROWTH EXTERMINATOR August M. Schroeder, Peotone, Ill.Application April 11, 1938, Serial No. 201,379

Claims.

This invention relates to growth exterminators of the character setforth in my United States Patent No. 2,069,634 and has for the primaryobject the provision of an improved means control- 6 ling the dispensingof the exterminating liquid so that during the cutting of growth below asurface of the ground by the device the exterminating liquid will bedirected onto the roots of the growth or that part of the growth left in10 the ground to' assure the extermination thereof and which consists ofa minimum number of parts rendering the device economical to manufactureand foolproof against waste or loss of the exterminatlng liquid, thelatter being positively prevented from escaping until such time thedevice is cutting through the ground and; the growth.

With these and other objects in view, this inventionconsists in certainnovel features of construction, combination and arrangement of parts tobe hereinafter more fully described and claimed. I

For a complete understanding of my invention, reference is to be had tothe following description and accompanying drawing, in which- Figure 1is a side elevation, partly in section, illustrating. a growthexterminator constructed in accordance with my invention.

Figure 2 is a fragmentary vertical sectional view drawn on an enlargedscaleshowing the means of controlling the dispensing of theexterminating liquid from the exterminator.

Figure 3is a View similar to Figure 2 showing the device in cuttingposition which brings about opening of the discharge thereof to'permitthe dispensing of the exterminating liquid.

Figure 4 is a fragmentary top plan view showing the cutting blade andits attachment onto the device.

40, Referring in detail to the drawing, the numeral I indicates a handleof a selected length and of hollow formation to form a reservoir toreceive an exterminating liquid. One handle is closed by a removable cap2 which will permit the reservoir to be filled with exterminating liquidat any time needed. Ifdesired, the handle I may be equipped with a tank3, the handle extending through the end walls of said tank andthe latterbeing in communication with 50, the interior of the handle by ports 4formed in said handle adjacent the end walls, of the tank; Thegpurposeof the tank 3 is to provide a greater capacity for exterminating liquidthan would be provided for by the handle I alone.

55: 'Qne end of v thehandle is. equipped with an end of the.

7 head and opens the chamber external flange 5 engaged by an internallythreaded coupling collar 6. Tl1e collar 6 is employed for detachablysecuring to the latternamed end of the handle a body 7 provided with abore 8 extending therethrough and in which ,5 is formed a valve seat 9located adjacent the free end of the body. Gaskets iii are interposedbetween the body and the handle and also clamped between the body andthe handle is a flange ll of a cup-shaped spider l2 acting as a 10 seatfor one end of a coil spring i3, the other end of the spring engaging avalve .element M I adapted to coact with the seat 9 in closing the bore8 under the influence of the spring l3. Pins I5 are carried by thespider and the valve ele- 1d ment and enter the coil spring l3 to'act asguides therefor. Threaded in the valve element I4 is a regulating pin I6the free end of which is located beyond the discharge end of the bore 8and enters a chamber ll of an attaching head 20 I8. The attaching headIt! includes a cylindrical portion l9 slidably mounted on the body landis provided with a flange 20' acting as a seat for one end of a coilspring 2 l. The other end of the coil spring bears against the shoulder22 formed 25 on the body 1. A chuck 23' is mounted on the cylindricalportion IQ of the attaching head and is detachably secured on the bodyby a sleeve 23 acting as a protector for the spring 2!. The sleeve 23 isthreaded on the body and on the 30v chuck holding the latter againstmovement relative to the body. Theattaching head is free to sliderelative to the chuck and the body 1. The sliding movement of theattaching head is limited in one direction by a flange 20 abuttingthechuckv under the influence of the spring 2|. A shoulder 24 is formed onthe body 1 for limiting the sliding movement of the attaching head onthe body in an opposite direction from that described. The chamber I1heretofore mentioned is formed by the cylindrical portionila of theattaching head l8 and the free end of the body and receives from thereservoir the exterminating liquid when the element I4 is unseated bymovement of the attachingrhead rela- 45- s tive to the body and comingin contact with the 16. A port 26 is formed in the attaching I! for thedischarge of exterminating liquid from said chamber IT. The attachinghead l8 includes a fiat face 27 arranged adjacent the port 26 on whichis secured a cutting blade 28 including at one end a guard 29 arrangedinfront of and spaced from the port 26. The purpose of'the guardfzs is, topreventsoil or dirt from being pushed'into pin the port during theinsertion of the cutting blade and a portion of the attaching head intothe ground for the purpose of severing growth below the surface of theground.

In operation, normally the attaching head is positioned by the spring 2|in its outermost position allowing the spring 13 to maintain the valveelement I4 in engagement with the seat 9, consequently closing the bore8 and preventing the escape of exterminating liquid from the bore andthe reservoir. To sever growth a person gripping the handle I shoves theblade through the ground at an angle, as shown in Figure 2. As the bladepasses through the growth below the surface of the ground sufficientresistance is offered to the blade to bring about movement of theattaching head on the body by the pressure exerted on the handle by theperson. As the attaching head moves toward the body it engages the pinit and unseats the valve allowing discharge of exterminating liquid onthe ground and on the growth where severed by the blade, as shown inFigure 3. It will be seen that the attaching head follows the cuttingblade 28 into the ground so that the discharge of the exterminatingliquid from the chamber I! will be into the ground and onto the severedgrowth assuring extermination of the portion of the growth left in theground. As soon as the blade is withdrawn from the ground the spring 2!restores the attaching head 18 to its initial position and the spring l3closes the valve element against the seat 9 interrupting the dischargeof exterminating liquid.

The blade 28 is detachably secured on the head l8 so that it can beeasily removed whenever de-- sired. The pin 16 being adjustable on thevalve element 14 will permit a variance in the unseating of the valve bythe head i8 moving relative to the body "I in one direction so that acontrol over the amount of exterminating liquid discharged can be had.

What is claimed is:

l. A growth exterminator comprising a handle providing a reservoir forexterminating liquid, a body secured to one end of the handle and havinga bore extending therethrough and in direct communication with thehandle, a spring pressed valve operating in said bore for normallyclosing the latter, a spring influenced attaching head having arestricted reciprocatory movement relative to said body to unseat thevalve and to per mit the escape of the exterminating liquid, and acutting blade mounted on said attaching head.

2. A growth exterminator comprising a handle I acting as a reservoir forexterminating liquid, a

body detachably mounted on said handle and having a bore extendingtherethrough and in direct communication with said handle, a springinfluenced valve in said bore for normally closing the latter, a pinadjustably secured to saidvalve and extending outwardly of the bore, anattaching head having restricted reciprocatory movement relative to saidbody and having a discharge port, a spring acting on said head fornormally positioning the latter to permit the valve to close and adaptedwhen engaged with the ground and pressure applied to the handle tounseat said valve to permit the escape of the exterminating liquid byway of said port, and a blade carried by the head.

3. A growth exterminator comprising a handle acting as a reservoir forexterminating liquid, a body detachably mounted on said handle andhaving a bore extending therethrough and in direct communication withsaid handle, a spring influenced valve in said bore for normally closingthe latter, an attaching head having a restricted reciprocatory movementrelative to said body and having a discharge port, a spring acting onsaid head for normally positioning the latter to permit the valve toclose and adapted when engaged with the ground and pressure applied tothe handle to unseat said valve to permit the escape of theexterminating liquid by way of said port, and a cutting blade removablymounted on said head and including a guard positioned in front andspaced from the port.

4. A growth exterminator comprising a handle acting as a reservoir forexterminating liquid, a body detachably mounted on said handle andhaving a bore extending therethrough and in direct communication withsaid handle, a spring influenced valve in said bore for normally closingthe latter, a pin adjustably secured to said valve and extendingoutwardly of the bore, an attaching head slidably mounted on said bodyand having a discharge port, a spring acting on said head for normallypositioning the latter to permit the valve to close and adapted whenengaged with the ground and pressure applied to the handle to unseatsaid valve to permit the escape of the exterminating liquid by way ofsaid port, and a cutting blade removably mounted on said head andincluding a guard positioned in front and spaced from the port, a chuckmounted on said head, a sleeve detachably securing said chuck on thebody, a flange formed on said head to abut the chuck under the influenceof said spring,

and a shoulder formed on the body to abut the head when moved againstthe action of said spring.

5. A growth exterminator comprising a handle acting as a reservoir foran exterminating liquid, a body detachably mounted on said handle andhaving a bore extending therethrough and in direct communication withsaid handle, a spring influenced valve in said bore for normally closingthe latter, a pin adjustably secured to said valve and extendingoutwardly of the bore, an attaching head slidably mounted on said bodyand having a discharge port, a spring acting on said head for normallypositioning the latter to permit the valve to close, and adapted whenengaged with the ground and pressure applied to the handle to unseatsaid valve to permit the escape of the exterminating liquid by way ofsaid discharge port, a chuck mounted on said head, a sleeve detachablysecuring said chuck on the body, a flange formed on said head to abutthe chuck under the influence of said spring, and a shoulder formed onthe body to abut the head when moved against the action of said spring.

6. A growth exterminator comprising a handle acting as a reservoir foran exterminating liquid, a body detachably mounted on said handle andhaving a bore extending therethrough and in direct communication withsaid handle, a spring influenced valve in said bore for normally closingthe same, an attaching head slidably mounted on said body and having adischarge port, stop means carried by the body to restrict the slidingmovement of the said attaching head within predetermined limits, aspring acting on said head for normally positioning the latter to permitthe valve to close, and a knife blade carried by the said head.

'7. A device comprising in combination a hollow casing, a valve normallyclosing one end of said casing, a shank carried by the valve andextending forwardly thereof beyond the said casing, a slidable headhaving a restricted reciprocatory movement relative to said body andadapted to engage the said shank to open the said valve, spring means tomaintain the said head normally disengaged from the said shank, andaknife means carried by the said movable head.

8. A device comprising in combination a hollow casing, a valvepositioned in one end of the said casing, spring means to maintain thesaid valve normally seated, an adjustable pin carried by the valve andextending forwardly thereof beyond the said casing, a slidable headactuating said valve and having a discharge port and an annular flange,spring means maintaining said head normally disengaged from the saidpin, a chuck abutting the said annular flange to restrict the outwardmovement of the said head, and a sleeve detachably securing the chuck tothe casmg.

9. A device comprising ,in combination a hollow casing, a valvepositioned in one end of the said casing, spring means to maintain thesaid valve normally seated, an adjustable pin carried by the valve andextending forwardly thereof beyond the said casing, a slidable headactuating strict the outward movement of the said head, a

sleeve detachably securing the chuck to the casing, and a knife meanscarried by the said movable head.

10. A device comprising in combination a hollow casing, a valvepositioned in one end of the said casing, spring means to maintain thesaid valve normally seated, an adjustable pin carried by the valve andextending forwardly thereof beyond the said casing, a slidable headactuating said valve and having a discharge port and an annular flange,spring means maintaining said head normally disengaged from the saidpin, a chuck abutting the said annular flange to restrict the outwardmovement of the said head, a sleeve detachably securing the chuck to thecasing, and a guard associated with the said discharge port to preventdebris from entering therein.

AUGUST M. SCHROEDER.

